Lucille Austero is trying to fight her chronic vertigo without the use of medication. Her condition is introduced in the same episode she is, "Key Decisions". She has a vertigo fit at the hospital while flirting with Buster.

Lucille 2 later attributes her lower frequency of fits to her relationship with Buster. ("My Mother, the Car") However, they flare up again and Buster refers to the vertigo as "our vertigo". He also tries to get George Michael to buy her marijuana to help her deal. ("Pier Pressure")

Lucille eventually undergoes some treatment at the Plumb Clinic which cures her, but a ride in Michael's Corvette throws her off balance again. ("Queen for a Day")